Feature: Add flag for screen readers

Screen reader mode will,
Reverse direction
Not shows symbols (directory hierarchy or percentage bars)
Adds a column 'depth' to show depth of directory

src/cli.rs

@@ -81,6 +81,12 @@ pub fn build_cli() -> Command<'static> {
                 .number_of_values(1)
                 .help("Minimum size file to include in output"),
         )
+        .arg(
+            Arg::new("screen_reader")
+                .short('R')
+                .long("screen-reader")
+                .help("For screen readers. Removes bars. Adds new column: depth level (May want to use -p too for full path)"),
+        )
         .arg(
             Arg::new("skip_total")
                 .long("skip-total")